Valve assembly for container of pressurised fluid

Details Valve assembly for container of pressurised fluid Valve assembly for container of pressurised fluid

B - Operations, Transporting

65

D

222/59

B65D 83/06 (2006.01) B65D 83/14 (2006.01)

Patent

CA 1230095

ABSTRACT VALVE ASSEMBLY FOR CONTAINER OF PRESSURISED FLUID In a valve assembly for a pressurised fluid dispensing container, such as those commonly known as aerosol cans, the filling with propellant gas at the very high speed and pressure needed to meet current production rates presents problems. The invention involves crimping the centre boss of the sheet metal mounting cup in such a way, and at a point below the enlarged head portion of the valve housing, that the part of the boss above the crimp and around the valve housing bows outwards to provide clearance for "gassing". There are notches 23 in the lower part of the outside of the head portion but these stop short of the upper face of the head. The valve stem may also have external axial grooves 20 placed to increase the effective cross-sectional area during gassing.

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